As delivered, each unit houses one 5.5 MW power conversion and step-up set: a PCS plus its medium-voltage step-up transformer. Other ratings are confirmed against the equipment supplier's dimensions, weights and heat loads; a 2.75 MW-class set also fits in a 20 ft high cube.
ISO 14001
ISO 45001
ISO 9001
BESS PCS Container (40 ft)
For PCS makers and BESS integrators worldwide — one PCS and step-up transformer set per 40 ft high cube, subsystem integration, enclosure-only to OEM/ODM delivery.
Utility-Scale Battery StorageRenewable Energy Grid Connection
ETENZ's 40 ft BESS PCS container houses one power conversion system (PCS) and its medium-voltage step-up transformer in a single 40 ft high cube; the transformer sits in its own compartment, naturally ventilated through mesh doors on the long side.
Lighting, emergency lighting, smoke detection, heating and temperature/humidity control are installed before shipment and specified to the destination country's standards. PCS manufacturers, MV equipment makers and BESS integrators can house their own equipment one set per storage block, then lift and ship each unit like a container. Delivery starts at Enclosure Only (Interface-Ready) and extends to Subsystem Integration and a Factory-Integrated Module, with painting and markings in the customer's brand. The design is already exported in volume: 18 units were delivered for the Richborough Energy Park in the UK, each housing a 5.5 MW power conversion and step-up set.
40 ft high cube
Size
Fits 5.5MW
Power
Mesh vent doors
Cooling
25years
Design Life
Product Features
Ships as a Container
Built to 40 ft high cube dimensions, so lifting, lashing and transport follow standard container practice.
Ships as a Container
Built to 40 ft high cube dimensions, so lifting, lashing and transport follow standard container practice.
One PCS Set per Unit
Each unit houses one PCS and MV step-up transformer set, 5.5 MW per unit as delivered, and the unit count follows your storage blocks.
Natural Ventilation
The transformer has its own compartment cooled by natural airflow through mesh doors, so its heat stays out of the equipment room's air-conditioning load.
Auxiliaries Included
Lighting, 90-minute emergency lighting, sockets, smoke detection, exit signs, heaters and temperature/humidity controllers are fitted before shipment to destination standards.
Factory Livery
Colour blocks and logos are painted in the factory to your brand identity, so units arrive on site already in the plant's livery.
Exported to the UK
18 units of the same 40 ft design went to the Richborough Energy Park in the UK, delivered in 2022.
Product Details
End doors and container number
Outside dimensions are 12,192 × 2,438 × 2,896 mm, the same as an ISO 40 ft high cube. Every corner has a standard corner casting and the container number is painted on the corner post. The end wall has double doors with locking bars and seals, marked with the maximum gross mass and tare.
End doors and container number
The long-side doors follow the compartments inside. The section facing the transformer compartment has four mesh ventilation doors, each split into upper and lower mesh panels by a centre rail; the equipment section has solid doors with ventilation louvres above. Each compartment opens from outside through its own doors.
The transformer compartment has no solid wall: the mesh doors face the transformer radiators and ventilate them naturally. With the doors fully open, the whole side of the transformer is exposed, so servicing is done from outside. The transformer is customer-supplied; the enclosure leaves space for its dimensions, weight and cooling needs.
The transformer compartment roof is corrugated steel on cross beams, with junction boxes and flexible metal conduits dropping from the roof to the transformer and the PCS. ETENZ sets mounting positions, openings and routing space from the equipment supplier's drawings; the transformer, PCS, junction boxes and conduits come with the equipment.
With the long-side doors open, every compartment can be reached from outside. The end compartment opens from both the end wall and the long side and has a chequer-plate floor; the transformer and equipment compartments each have their own doors. Equipment installation, cabling and later servicing all happen from outside.
The green lightning-bolt colour block at the end of the long side and the logos of the project owner and equipment supplier are painted before the unit leaves the factory; door warning labels and numbering are also made to the project's requirements. Units arrive on site in the plant's unified livery.
Delivery Scope Options
Scope 1
Enclosure Only (Interface-Ready)
Scope 1The 40 ft high cube enclosure and door sets are built to the equipment supplier's drawings, with the transformer mesh ventilation doors, equipment mounting positions, cable entries and earthing points prepared in the factory; the customer installs the equipment and auxiliary systems.
Scope Includes:
40 ft high cube enclosure with standard corner castings
Long-side door sets and transformer mesh ventilation doors
Equipment mounting positions and cable entries
Earthing points
Exterior coating
Technical Specifications
Outside dimensions (L × W × H)
12,192 × 2,438 × 2,896
mm · ISO 668
Container type
40 ft high cube; standard corner castings; container number on the corner post
ISO 1161
Housed equipment power
5.5 (as delivered; other ratings confirmed against equipment dimensions, weight and heat load)
MW
Compartments
Transformer compartment + equipment compartment, divided to the equipment supplier's layout; PCS and transformer supplied by the customer
Transformer ventilation
Four mesh ventilation doors on the long side; natural ventilation
Max. gross mass / tare
35,000 / 10,000 (door markings; gross mass with equipment installed is confirmed per equipment)
kg
Ingress protection
Enclosed compartments designed to IP54 / IP55; mesh ventilation doors at the transformer compartment
IEC 60529
Corrosion category
C3 / C4 / C5, selected for the site environment
ISO 12944
Enclosure materials
2.0 mm galvanized steel roof; 1.6–2.0 mm corrugated steel walls; channel and square-tube frame
Auxiliary systems
Lighting, 90-minute emergency lighting, sockets, smoke detection, exit signs, heaters, temperature/humidity controllers; specified to destination-country standards and language
LV auxiliary distribution
Auxiliary power distribution and control, internal wiring and cable trays, earthing and equipotential bonding
IEC 61439-1 / -2
Livery and markings
Painted to the project owner's or equipment supplier's brand; nameplates and warning labels in the project language
Design life
25
years
Factory inspection
Unit-level checks of structure, door locks and seals, LV and lighting, smoke alarm and earthing; inspection records ship with the unit
Enclosure warranty
12 (extendable to 24)
months
Management systems
ISO 9001 / ISO 14001 / ISO 45001
| Parameter | Specification |
|---|---|
| Outside dimensions (L × W × H) | 12,192 × 2,438 × 2,896 mm · ISO 668 |
| Container type | 40 ft high cube; standard corner castings; container number on the corner post ISO 1161 |
| Housed equipment power | 5.5 (as delivered; other ratings confirmed against equipment dimensions, weight and heat load) MW |
| Compartments | Transformer compartment + equipment compartment, divided to the equipment supplier's layout; PCS and transformer supplied by the customer |
| Transformer ventilation | Four mesh ventilation doors on the long side; natural ventilation |
| Max. gross mass / tare | 35,000 / 10,000 (door markings; gross mass with equipment installed is confirmed per equipment) kg |
| Ingress protection | Enclosed compartments designed to IP54 / IP55; mesh ventilation doors at the transformer compartment IEC 60529 |
| Corrosion category | C3 / C4 / C5, selected for the site environment ISO 12944 |
| Enclosure materials | 2.0 mm galvanized steel roof; 1.6–2.0 mm corrugated steel walls; channel and square-tube frame |
| Auxiliary systems | Lighting, 90-minute emergency lighting, sockets, smoke detection, exit signs, heaters, temperature/humidity controllers; specified to destination-country standards and language |
| LV auxiliary distribution | Auxiliary power distribution and control, internal wiring and cable trays, earthing and equipotential bonding IEC 61439-1 / -2 |
| Livery and markings | Painted to the project owner's or equipment supplier's brand; nameplates and warning labels in the project language |
| Design life | 25 years |
| Factory inspection | Unit-level checks of structure, door locks and seals, LV and lighting, smoke alarm and earthing; inspection records ship with the unit |
| Enclosure warranty | 12 (extendable to 24) months |
| Management systems | ISO 9001 / ISO 14001 / ISO 45001 |
Product FAQs
The PCS, the MV step-up transformer and the connections between them come from the customer, either the equipment supplier or the system integrator. ETENZ supplies the enclosure and doors, transformer compartment ventilation, auxiliary systems and exterior painting. Customer equipment can be installed at the customer's own factory, or integrated within the agreed scope before the complete unit ships.
A PCS container holds the PCS and its MV step-up transformer in one 40 ft high cube, one unit per storage block. A step-up substation enclosure has three compartments (MV, transformer and LV) for the step-up transformer and MV/LV switchgear, with the PCS installed elsewhere. ETENZ also builds a 20 ft BESS step-up substation enclosure.
Its outside dimensions match a 40 ft high cube and every corner has a standard corner casting, so lifting, lashing and transport are arranged as for a container. Gross mass with equipment installed depends on the equipment, so lifting gear, vehicles and transport mode are chosen against the gross mass confirmed by the equipment supplier.
Yes. Sockets, luminaires, emergency lighting duration and controller interface language follow the project country. For the UK project that meant UK-standard sockets, CE-marked LED lighting, 90-minute emergency lighting and temperature/humidity controllers with an English interface. For projects in Europe, an EU declaration of conformity can be issued for the electrical installation inside the unit, project by project.
The transformer compartment is naturally ventilated through the long-side mesh doors, which face the transformer radiators. Ventilation or air conditioning for the equipment room is sized to the equipment supplier's heat load and the local climate; heaters and temperature/humidity controllers protect against low temperatures and condensation.
Yes. Colour blocks, logos, nameplates and warning labels are produced in the factory from your artwork files, unit documents follow your format, and the complete unit ships under your brand.
The equipment list with each item's dimensions, weight and heat load; a single-line diagram or cable entry positions; auxiliary supply voltage and destination-country standards; livery and marking files; quantity and delivery location.
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